My prefix is an increase, a flowing unit, and an acid
My infix, with different hearts, can be friends, fruits, or emotions
My suffix can make castles, storms, and even paper
My all is not the word you discovered, for that is only my name
What am I?
&, or an ampersand
Your prefix is
Your infix is
pers, as in peers, pears and peurs, which means fears in French.
Your suffix is
sand, as in sandcastle, sandstorm and sandpaper.
1$\begingroup$ Waited a bit for that edit, great job! $\endgroup$ Apr 29, 2022 at 12:38